mp-1189729-3/Ba2SmGaTe5/anharm

Harmonic properties

../../_images/fig_bandos_pr15933.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo15932.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6906.png

(a) Grüneisen parameters

../../_images/fig_gruneisen6906.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 9x8x7, supercell: 2x2x2

../../_images/fig_kappa13003.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size6987.png

(b) Peierls lattice thermal conductivity w.r.t grain size

Phonon lifetime and scattering rates

../../_images/fig_lifetime6840.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6839.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6840.png

(a) Spectral and cumulative thermal conductivity w.r.t frequency

../../_images/fig_cumu_mfp6839.png

(b) Spectral and cumulative thermal conductivity w.r.t MFP

Force constants

../../_images/fig_fc215528.png

(a) Force constants w.r.t atomic distance

Summary

../../_images/fig_kappa13004.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times26246.png

(b) Computation time